DOS下用来发声的sound函数只能以频率作为参数，所以要完成音符到频率的翻译，没个音的音频可用以模拟频率值输入。-DOS can only be used for voice sound function with frequency as parameter, so to complete the notes to the frequency of the translation, not a sound in the audio input can be used to simulate

一个易语言写的可定时的录音机源码,可录线性输入口的音频()